What is gypsum what happens when gypsum is heated to 100 degree C (373 K)
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Gypsum available in general form is Ca (S04).nH20.
Under normal conditions, the value of n ranges from 1.96 to 2.0 however when the temperature increases from 100 to 170 degrees, the value of n changes from 0.5 to 0.8
Heating beyond 250 degrees would result in the value of n reaching the value zero. The product formed due to heating is called anhydrite.
Under normal conditions, the value of n ranges from 1.96 to 2.0 however when the temperature increases from 100 to 170 degrees, the value of n changes from 0.5 to 0.8
Heating beyond 250 degrees would result in the value of n reaching the value zero. The product formed due to heating is called anhydrite.
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When gypsum is heated at 373K it loses 1 water of crystallization and becomes plaster of Paris
Caso4+1.05 H2O -> CaSO4.+ 0.5H2O
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